id summary reporter owner description type status component version resolution keywords cc guest host 2602 Immediate Reboots of Vista64 host + XML corruption when loading saved W2K guest by VBox 2.0.4 64bit => Fixed in 3.1.4 Libor "Hello, I run guest W2K SP4 professional on Free version of VirtualBox 2.0.4 -64 ( czech localization ) on host Vista64 Home Premium SP1, ( all patches applied ). As other sw running Avast Home AV and Comodo CIS 3.5( firewall + HIPS ) . This issue happened for second time in last few days by exactly the same way: When loading saved state of W2K VM, the screen gets suddenly black and Vista OS reboots immediately without warning. Not sure at 1st time, at 2nd time R/O manually run chkdsk showed no problem at any partitions. When run VBox again, it shows W2K machine is not available with ""one-way-road red traffic sign"". When 1st time it occured, I was not able to use as emergency solution another freshly created W2K guest, using any of existing W2K disk states. Virtual disk manager showed that all snapshots are unavailable. Counting this time it will be the same. In 1st time W2K was just installed and updated and some system installs, so I wiped it and installed guest from the scratch. But I am definitely not going to perform it every week :-) In details window is written this (btw I could not copy it even if VBox context menu offers it, so retyped ): --------- Could not load the settings file: L:\.VirtualBox\Machines\Win2000SP4\Win2000SP4\W2K.xml Premature end of data in tag VirtualBox line 3. Location: 'L:\.VirtualBox\Machines\Win2000SP4\Win2000SP4\W2K.xml', line 400(3), column 43 Return code: E-FAIL (0x80004005) Component: VirtualBox Interface: IVirtualBox {557a07bc-e6ae-4520-a361-4a8493199137} --------- " defect closed other VirtualBox 2.0.4 fixed reboot, XML, corruption other other